CN103320748B - Mold surface heat treatment hardening process - Google Patents
Mold surface heat treatment hardening process Download PDFInfo
- Publication number
- CN103320748B CN103320748B CN201310279041.4A CN201310279041A CN103320748B CN 103320748 B CN103320748 B CN 103320748B CN 201310279041 A CN201310279041 A CN 201310279041A CN 103320748 B CN103320748 B CN 103320748B
- Authority
- CN
- China
- Prior art keywords
- heat treatment
- treatment
- mold
- hardening
- protective coating
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Expired - Fee Related
Links
- 238000000034 method Methods 0.000 title claims abstract description 26
- 230000008569 process Effects 0.000 title claims abstract description 19
- 238000010438 heat treatment Methods 0.000 title claims abstract description 17
- 239000011253 protective coating Substances 0.000 claims abstract description 14
- 238000000576 coating method Methods 0.000 claims description 12
- 239000011248 coating agent Substances 0.000 claims description 10
- 238000007669 thermal treatment Methods 0.000 claims description 5
- 239000003795 chemical substances by application Substances 0.000 claims description 4
- 235000011194 food seasoning agent Nutrition 0.000 claims description 4
- ZOXJGFHDIHLPTG-UHFFFAOYSA-N Boron Chemical compound [B] ZOXJGFHDIHLPTG-UHFFFAOYSA-N 0.000 claims description 2
- VYZAMTAEIAYCRO-UHFFFAOYSA-N Chromium Chemical compound [Cr] VYZAMTAEIAYCRO-UHFFFAOYSA-N 0.000 claims description 2
- 239000011230 binding agent Substances 0.000 claims description 2
- 229910052796 boron Inorganic materials 0.000 claims description 2
- 229910010293 ceramic material Inorganic materials 0.000 claims description 2
- 229910052804 chromium Inorganic materials 0.000 claims description 2
- 239000011651 chromium Substances 0.000 claims description 2
- NUEWEVRJMWXXFB-UHFFFAOYSA-N chromium(iii) boride Chemical compound [Cr]=[B] NUEWEVRJMWXXFB-UHFFFAOYSA-N 0.000 claims description 2
- 238000004140 cleaning Methods 0.000 claims description 2
- 229910052500 inorganic mineral Inorganic materials 0.000 claims description 2
- 238000002844 melting Methods 0.000 claims description 2
- 230000008018 melting Effects 0.000 claims description 2
- 239000012528 membrane Substances 0.000 claims description 2
- 239000011707 mineral Substances 0.000 claims description 2
- 230000003647 oxidation Effects 0.000 claims description 2
- 238000007254 oxidation reaction Methods 0.000 claims description 2
- 230000001681 protective effect Effects 0.000 claims description 2
- 238000010791 quenching Methods 0.000 claims description 2
- 230000002829 reductive effect Effects 0.000 claims description 2
- 229910001315 Tool steel Inorganic materials 0.000 abstract description 4
- 238000004381 surface treatment Methods 0.000 abstract 2
- OKTJSMMVPCPJKN-UHFFFAOYSA-N Carbon Chemical compound [C] OKTJSMMVPCPJKN-UHFFFAOYSA-N 0.000 abstract 1
- 229910045601 alloy Inorganic materials 0.000 abstract 1
- 239000000956 alloy Substances 0.000 abstract 1
- 229910052799 carbon Inorganic materials 0.000 abstract 1
- 239000011247 coating layer Substances 0.000 abstract 1
- 239000010410 layer Substances 0.000 abstract 1
- 230000002035 prolonged effect Effects 0.000 abstract 1
- 238000009792 diffusion process Methods 0.000 description 4
- 238000005507 spraying Methods 0.000 description 4
- 238000005275 alloying Methods 0.000 description 2
- 238000005229 chemical vapour deposition Methods 0.000 description 2
- 238000000151 deposition Methods 0.000 description 2
- 230000008021 deposition Effects 0.000 description 2
- 238000001035 drying Methods 0.000 description 2
- 229910052751 metal Inorganic materials 0.000 description 2
- 239000002184 metal Substances 0.000 description 2
- 238000005240 physical vapour deposition Methods 0.000 description 2
- 239000007921 spray Substances 0.000 description 2
- 230000006835 compression Effects 0.000 description 1
- 238000007906 compression Methods 0.000 description 1
- 238000005260 corrosion Methods 0.000 description 1
- 230000007812 deficiency Effects 0.000 description 1
- 238000005516 engineering process Methods 0.000 description 1
- 229910052758 niobium Inorganic materials 0.000 description 1
- 239000010955 niobium Substances 0.000 description 1
- GUCVJGMIXFAOAE-UHFFFAOYSA-N niobium atom Chemical compound [Nb] GUCVJGMIXFAOAE-UHFFFAOYSA-N 0.000 description 1
- 150000003839 salts Chemical class 0.000 description 1
- GFNGCDBZVSLSFT-UHFFFAOYSA-N titanium vanadium Chemical compound [Ti].[V] GFNGCDBZVSLSFT-UHFFFAOYSA-N 0.000 description 1
- 229910052720 vanadium Inorganic materials 0.000 description 1
- LEONUFNNVUYDNQ-UHFFFAOYSA-N vanadium atom Chemical compound [V] LEONUFNNVUYDNQ-UHFFFAOYSA-N 0.000 description 1
Landscapes
- Coating By Spraying Or Casting (AREA)
Abstract
The invention relates to a mold surface heat treatment hardening process. A hardening treatment coating layer and a self-made heat treatment protective coating layer are coated on the surface of a mold made of treated carbon tool steel or alloy tool steel; the surface hardness and the red hardness are greatly improved after temperature treatment of 1,000-1,500 DEG C. The service life of the mold is prolonged; the process is suitable for highly wear-resistant and heavy load bearing mold surface treatment, for example surface treatment of a stamping mold and a drawing mold. The mold surface heat treatment hardening process has the advantages of simple and convenient process, high economy, short treatment period and stronger practicability.
Description
Technical field
The present invention relates to machinery industry press tool field, be specifically related to a kind of die surface thermal treatment hardening process.
Background technology
By forming the wear-resisting diffusion layer of one deck high rigidity at die surface, improving the wear-resisting, anti-corrosion of mould, the performances such as bite-resistant, thus improve the mold use life-span, is effective and the method for economy.Modern superhard surfaces treatment process generally has physical vapor deposition (pvd), physical chemistry vapour deposition (pvcd), chemical vapour deposition (cvd), the methods such as thermal diffusion method carbide coating process (dt).Physical vapor deposition (pvd) method wherein, physical chemistry vapour deposition (pcvd) method, technological temperature is low, and die deformation is little, and hardness is high, but sticking power is poor, is not suitable for using in the moulds such as stretching.Chemical vapour deposition (cvd) method and thermodiffusion carbide coating process (td) method can obtain the high hard coat of excellent performance.The facility investment of above four kinds for the treatment of processs is expensive, complex process, and the scope of application has certain restricted condition, such as, must process etc. in the atmosphere of vacuum or salt bath.Adopt this thermodiffusion hardening treatment coating; heat treatment protective coating and treatment process; do not need heat treated under the atmosphere of protectiveness; facility investment is little; easy to use; the hard diffusion layer excellent performance of height formed after process, and the proportioning passing through different metal element in coating, can reach different requirements after treatment.
Summary of the invention
For above-mentioned deficiency of the prior art; the object of the present invention is to provide a kind of die surface thermal treatment hardening process; do not need heat treated under the atmosphere of protectiveness; the hard diffusion layer excellent performance of height formed after process; and pass through the proportioning of different metal element in coating, different requirements can be reached after treatment
In order to realize foregoing invention object, this application provides following technical scheme:
A kind of die surface thermal treatment hardening process, described step is as follows:
(1) workpiece surface cleaning;
(2) thermodiffusion hardening treatment coating 25-50 micron is sprayed;
(3) seasoning;
(4) heat treatment protective coating 30-50 micron is sprayed;
(5) seasoning;
(6) second time heat treatment protective coating 30-50 micron is sprayed;
Freeze-day with constant temperature 1h at (7) 200 DEG C;
(8) pyroprocessing 2-5h at 1000-1500 DEG C;
(9) quench;
(10) low-temperaturetempering.
Described thermodiffusion hardening treatment coating is boron chromium diffusant, and weight proportion is as follows
Described thermodiffusion hardening treatment coating is vanadium titanium diffusant, and weight proportion is as follows
Described heat treatment protective coating by mineral binder bond, thermal conducting agent, reductive agent, low melting point ceramic material form; during high temperature, form the protective membrane of one deck fritting state at workpiece surface, effectively isolated air, to the oxidation of mould, ensures internal layer chromium simultaneously; vanadium, niobium, boron essence is to die surface scattering and permeating.
The weight proportion of described heat treatment protective coating is as follows:
Embodiment:
The Surface hardening treatment of example 1 T10 tool steel punch compression mould
---spraying thermodiffusion hardening treatment coating (example 1) (25-50 micron)---dry (normal temperature 16 hours)---spraying heat treatment protective coating (30-50 micron)---dry (normal temperature 16 hours)------drying (200 DEG C × 1h)---pyroprocessing (1200 DEG C × 2h)---quenching---low-temperaturetempering that spray second time heat treatment protective coating (30-50 micron) that workpiece surface is cleared up
Process rear surface performance: alloying layer thickness 16 microns
Surface hardness HV1600-1800
The Surface hardening treatment of example 2 9GrWMn tool steel finish forge mould
Workpiece surface is cleared up---spraying thermodiffusion hardening treatment coating (example 2) (25-50 micron)---dry---spraying heat treatment protective coating (30-50 micron)---dry------drying (200 DEG C × 1h)---pyroprocessing (1400 DEG C × 4h)---quenching---low-temperaturetempering process rear mold surface property: alloying layer thickness 18 microns that spray second time heat treatment protective coating (30-50 micron)
Surface hardness HV1800-1900
Last it is noted that obviously, above-described embodiment is only for the application's example is clearly described, and the restriction not to embodiment.For those of ordinary skill in the field, can also make other changes in different forms on the basis of the above description.Here exhaustive without the need to also giving all embodiments.And thus the apparent change of amplifying out or variation be still among the protection domain of the application's type.
Claims (1)
1. a die surface thermal treatment hardening process, is characterized in that, described technique is as follows:
(1) workpiece surface cleaning;
(2) thermodiffusion hardening treatment coating 25-50 micron is sprayed;
(3) seasoning;
(4) heat treatment protective coating 30-50 micron is sprayed;
(5) seasoning;
(6) second time heat treatment protective coating 30-50 micron is sprayed;
Freeze-day with constant temperature 1h at (7) 200 DEG C;
(8) pyroprocessing 2-5h at 1000-1500 DEG C;
(9) quench;
(10) low-temperaturetempering;
Wherein, described thermodiffusion hardening treatment coating is boron chromium diffusant, and weight proportion is as follows
Described heat treatment protective coating by mineral binder bond, thermal conducting agent, reductive agent, low melting point ceramic material forms, and during high temperature, forms the protective membrane of one deck fritting state at workpiece surface, effectively isolated air is to the oxidation of mould, and ensure internal layer chromium, boron is to die surface scattering and permeating simultaneously; The weight proportion of described heat treatment protective coating is as follows:
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201310279041.4A CN103320748B (en) | 2013-07-04 | 2013-07-04 | Mold surface heat treatment hardening process |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201310279041.4A CN103320748B (en) | 2013-07-04 | 2013-07-04 | Mold surface heat treatment hardening process |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN103320748A CN103320748A (en) | 2013-09-25 |
| CN103320748B true CN103320748B (en) | 2015-06-10 |
Family
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201310279041.4A Expired - Fee Related CN103320748B (en) | 2013-07-04 | 2013-07-04 | Mold surface heat treatment hardening process |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN103320748B (en) |
Families Citing this family (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN105154893A (en) * | 2015-09-23 | 2015-12-16 | 宁波兴波机械有限公司 | Die heat treatment process for enhancing hardness of die |
Citations (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN1050571A (en) * | 1989-09-28 | 1991-04-10 | 本钢建筑材料金属加工厂 | On the copper matrix, be coated with, the method for metallic cementation |
| CN101748357A (en) * | 2008-12-04 | 2010-06-23 | 国立云林科技大学 | Magnesium alloy surface treatment method |
| CN102443810A (en) * | 2011-12-07 | 2012-05-09 | 吉林大学 | Surface strengthening treatment method of cold-working die steel punch |
-
2013
- 2013-07-04 CN CN201310279041.4A patent/CN103320748B/en not_active Expired - Fee Related
Patent Citations (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN1050571A (en) * | 1989-09-28 | 1991-04-10 | 本钢建筑材料金属加工厂 | On the copper matrix, be coated with, the method for metallic cementation |
| CN101748357A (en) * | 2008-12-04 | 2010-06-23 | 国立云林科技大学 | Magnesium alloy surface treatment method |
| CN102443810A (en) * | 2011-12-07 | 2012-05-09 | 吉林大学 | Surface strengthening treatment method of cold-working die steel punch |
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| Publication number | Publication date |
|---|---|
| CN103320748A (en) | 2013-09-25 |
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Granted publication date: 20150610 |